hematoidin

from The Century Dictionary.

• noun A crystalline substance often found in extravasated blood, resembling bilirubin closely, if not identical with it. Also spelled hematoidine, hæmatoidine.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Physiol. Chem.) A crystalline or amorphous pigment, free from iron, formed from hematin in old blood stains, and in old hemorrhages in the body. It resembles bilirubin. When present in the corpora lutea it is called hæmolutein.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun obsolete bilirubin

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an orange-yellow pigment in the bile that forms as a product of hemoglobin; excess amounts in the blood produce the yellow appearance observed in jaundice